package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // 123456  e10adc3949ba59abbe56e057f20f883e
        //fcea920f7412b5da7be0cf42b8c93759
        String md5Pwd = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!md5Pwd.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     *
     * @param employeeDTO
     */
    @Override
    public void save(EmployeeDTO employeeDTO) {
        //获取前端传递参数(employeeDTO --> employee)
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
        //employee.setName(employeeDTO.getName());
        //employee.setUsername(employeeDTO.getUsername());
        //employee.setPhone(employeeDTO.getPhone());
        //employee.setSex(employeeDTO.getSex());
        //employee.setIdNumber(employeeDTO.getIdNumber());

        //设置前端未传递参数
        // 设置默认密码
        String password = DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes());
        employee.setPassword(password);
        // 是否启用
        employee.setStatus(1);
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        employee.setCreateUser(1L);
        employee.setUpdateUser(1L);


        //调用Mapper 执行保存数据库操作
        employeeMapper.insert(employee);
    }

    /**
     * 分页条件查询
     *
     * @param queryDTO
     * @return
     */
    @Override
    public PageResult page(EmployeePageQueryDTO queryDTO) {
        //参数校验
        // 分页参数校验
        if (queryDTO.getPage() <= 0) {
            queryDTO.setPage(1);
        }
        if (queryDTO.getPageSize() <= 0) {
            queryDTO.setPageSize(10);
        }
        //分页查询
        Page<Employee> page = PageHelper.startPage(queryDTO.getPage(), queryDTO.getPageSize());
        //调用mapper执行查询
        List<Employee> employees = employeeMapper.page(queryDTO);
        //获取结果并封装返回
        PageResult pageResult = new PageResult(page.getTotal(), page.getResult());
        return pageResult;
    }
    /**
     * 启用禁用员工账号
     *
     * @param status
     * @param id
     */
    public void startOrStop(Integer status, Long id) {
        Employee employee = Employee.builder()
                .status(status)
                .id(id)
                .build();

        employeeMapper.update(employee);
    }
    /**
     * 根据id查询员工
     *
     * @param id
     * @return
     */
    public Employee getById(Long id) {
        Employee employee = employeeMapper.getById(id);
        employee.setPassword("****");
        return employee;
    }
    /**
     * 编辑员工信息
     *
     * @param employeeDTO
     */
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);

        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.update(employee);
    }
}
